uk.ac.essex.ia.media
Class OperatorHelper

java.lang.Object
  uk.ac.essex.ia.media.OperatorHelper

public class OperatorHelper
extends java.lang.Object

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Constructor Summary

OperatorHelper()

Method Summary

static void	checkParameters(java.lang.Class<? extends Operator> operatorClass, java.awt.image.renderable.ParameterBlock parameters, java.lang.Class... expectedClassOfParams)
static void	checkSources(java.lang.Class<? extends Operator> operatorClass, java.awt.image.renderable.ParameterBlock parameters, int numberOfReqSources) Checks the parameter block for a given number of sources, the source vector is also checked to see if the the objects stored are instances of RenderedImages.
static void	throwInvalidParameters() This is used to indicate an operator has invalid parameters.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

OperatorHelper

public OperatorHelper()

Method Detail

checkParameters

public static void checkParameters(java.lang.Class<? extends Operator> operatorClass,
                                   java.awt.image.renderable.ParameterBlock parameters,
                                   java.lang.Class... expectedClassOfParams)
                            throws InvalidParameterException

Throws:

InvalidParameterException

checkSources

public static void checkSources(java.lang.Class<? extends Operator> operatorClass,
                                java.awt.image.renderable.ParameterBlock parameters,
                                int numberOfReqSources)
                         throws java.lang.Exception

Checks the parameter block for a given number of sources, the source vector is also checked to see if the the objects stored are instances of RenderedImages.

Parameters:

operatorClass -

parameters -

numberOfReqSources - - The number of required sources

Throws:

java.lang.Exception

throwInvalidParameters

public static void throwInvalidParameters()
                                   throws InvalidParameterException

This is used to indicate an operator has invalid parameters. For now this method simply throws an exception. The message contains a translated string.

Throws:

InvalidParameterException